Length and tallness of the 2015 GMC Sierra 3500HD SLE 4×4 Crew Cab 167.7 in. WB SRW, which has width and wheelbase as 80.5″ and 167.7″, are mentioned as 258.4″ and 78.1″. Curb weight of this car which has ground clearance as 8.5″ is granted as 6,892 lbs.